photography question

every year at the summer ANA show there is a guy who sells coin photography equipemtn such as microscopes and semi-spheres to diffuse light when taking pics. Anyone know if he has a website? If so, could someone provide me with a link?
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nope, sorry.
<< <i>let me go see if they tagged my microscope I got from them......
nope, sorry. >>
I have the microscope which I really love and have taken some fantastic pics with. I was interested in the semi-spheres but I guess they don't work too wel.. Thanks guys
David